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Oliver super 77 aftermarket hydraulics

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popcornob
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PostPosted: Sun Jul 14, 2019 2:37 pm    Post subject: Oliver super 77 aftermarket hydraulics Reply to specific post Reply with quote

Hi,

So I purchased a tractor that had the hydraulics and two levers etc... turns out the pump plate is cracked. I was looking at some aftermarket hydraulic setups but can t figure out the details.

I looked at some fan belt driven pumps and the prince pto pump, but I can t find much info on how big of a reservoir it will need or where to put the reservoir. I have an old trip bucket loader that was converted to all double acting hydraulic rams I want to use on it.

Thanks for some ideas!
 
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90 Percent Retired
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PostPosted: Sun Jul 14, 2019 4:49 pm    Post subject: Re: Oliver super 77 aftermarket hydraulics Reply to specific post Reply with quote

This a link to the page on this site under Oliver 77 parts.
https://www.yesterdaystractors.com/cgi-bin/store/model_parts.cgi?SearchArea=Oliver&&md=77&cat=Hydraulic%20System&r=mcats [url][/url]
 
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popcornob
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PostPosted: Sun Jul 14, 2019 5:24 pm    Post subject: Re: Oliver super 77 aftermarket hydraulics Reply to specific post Reply with quote


That looks like a decent front mount pump but I still can t find any specs or info on reservoir size and where people put them.
 
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Tramway Guy
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PostPosted: Sun Jul 14, 2019 5:41 pm    Post subject: Re: Oliver super 77 aftermarket hydraulics Reply to specific post Reply with quote

New plates are readily available and are reasonably priced...
 
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popcornob
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PostPosted: Sun Jul 14, 2019 5:48 pm    Post subject: Re: Oliver super 77 aftermarket hydraulics Reply to specific post Reply with quote


I plan on using the tractor to plow snow and do projects around the cabin. From what I can tell a bigger pump will speed up the hydraulics and not cost a whole lot more than fixing the setup I have now. I intend to remove the old pump and bolt on a plate to seal transmission from the elements.
 
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ss55
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PostPosted: Sun Jul 14, 2019 7:46 pm    Post subject: Re: Oliver super 77 aftermarket hydraulics Reply to specific post Reply with quote

Is there any reason you can't use the transmission case for the hydraulic oil sump like 1960's and later tractors? Modern trans-draulic or hy-tran oils can handle both functions. The transmission would have several gallons of oil capacity and excellent cooling with all the surface area. A check valve in the suction line may be needed if the pump is higher than the oil level.
 
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J. Schwiebert
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PostPosted: Sun Jul 14, 2019 8:02 pm    Post subject: Re: Oliver super 77 aftermarket hydraulics Reply to specific post Reply with quote

Send me an e-mail How many gallon per minute pump are you thinking?
 
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rrlund
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PostPosted: Mon Jul 15, 2019 3:14 am    Post subject: Re: Oliver super 77 aftermarket hydraulics Reply to specific post Reply with quote

You're gonna find that bolting a plate on there isn't as simple as you think. There has to be a riser for the shift and a carrier bearing for the PTO long shaft. You can probably find the correct plate that goes on in place of the pump,but you'll pay what it'd cost to fix your original pump,never mind the cost of a different hydraulic system.
 
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Traditional Farmer
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PostPosted: Mon Jul 15, 2019 6:31 am    Post subject: Re: Oliver super 77 aftermarket hydraulics Reply to specific post Reply with quote

If you are not going to use the PTO pump one of those PTO pumps would be the simple way to go but you'll still have a good amount of $$$$ in it by the time you buy a valve,tank.filter,hoses,etc etc.
 
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popcornob
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PostPosted: Mon Jul 15, 2019 6:34 am    Post subject: Re: Oliver super 77 aftermarket hydraulics Reply to specific post Reply with quote

CVPost-rrlund wrote:
(quoted from post at 04:14:33 07/15/19) You're gonna find that bolting a plate on there isn't as simple as you think. There has to be a riser for the shift and a carrier bearing for the PTO long shaft. You can probably find the correct plate that goes on in place of the pump,but you'll pay what it'd cost to fix your original pump,never mind the cost of a different hydraulic system.



I m saying I would fab a piece of 1/8" plate and use the pump housing bolt holes and rtv to delete the pump.
 
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popcornob
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PostPosted: Mon Jul 15, 2019 6:42 am    Post subject: Re: Oliver super 77 aftermarket hydraulics Reply to specific post Reply with quote

i don t see your email under profile. I m looking for a performance gain over the original so probably around 20gpm. Maybe 2000psi.
 
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ss55
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PostPosted: Mon Jul 15, 2019 9:33 am    Post subject: Re: Oliver super 77 aftermarket hydraulics Reply to specific post Reply with quote

770, 880 series hydraulic systems were only designed for 1000 PSI. Upgrading to a 1960's four digit series or 1970's White might fit you needs better.
 
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Olliejunkie
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PostPosted: Mon Jul 15, 2019 9:36 am    Post subject: Re: Oliver super 77 aftermarket hydraulics Reply to specific post Reply with quote

I have a 77 and 88 with front mount pumps. The 88 works well.
 
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popcornob
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PostPosted: Mon Jul 15, 2019 9:36 am    Post subject: Re: Oliver super 77 aftermarket hydraulics Reply to specific post Reply with quote

CVPost-ss55 wrote:
(quoted from post at 10:33:33 07/15/19) 770, 880 series hydraulic systems were only designed for 1000 PSI. Upgrading to a 1960's four digit series or 1970's White might fit you needs better.


That s why I am leaning towards aftermarket because the rams have been updated.
 
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chucksoliver77
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PostPosted: Mon Jul 15, 2019 11:10 am    Post subject: Re: Oliver super 77 aftermarket hydraulics Reply to specific post Reply with quote

You will need the pto support/bushing if you plan on using the pto after you remove the pump.
 
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